Group 1: Images with a Transparent Component
Group 2: General Patterns
Group 3: General Patterns
Group 4: General Patterns
Group 5: General Patterns
Group 6: General Patterns
Group 7: Hexagonal Tile Variations
Group 8: More Hexagonal Tile Variations
Group 9: General Patterns (includes "tall" colour gradients)
Group 10: General Patterns (includes "wide" designs with edge motifs)
Group 11: General Patterns (includes still more "wide" designs with edge motifs)